W912WJ19R0014_0003.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

This Amendment incorporates Native CAD and XYZ Files, incorporates an Amendment to the Specifications Document, increases the page limit for technical proposals, and answ ers Contractor Requests for Information. See Summary

1. CONTRACT ID CODE PAGE OF PAGES

1 13

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 26-Jul-2019

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912WJ19R0014

X 9B. DATED (SEE ITEM 11)

20-May-2019

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

26-Jul-2019

CODE

U S ARMY ENGR DISTRICT, NEW ENGLAND

696 VIRGINIA RD

CONCORD MA 01742-2751

W912WJ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912WJ19R0014

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00010 - SOLICITATION CONTRACT FORM

The following have been added by full text:

AMEND 0003 SUMMARY

This Amendment makes the following changes:

1. Incorporate the following Native CAD and XYZ Files:

a. 215042-200-FIRE-Alarm

b. MUD-2_B-SI

c. MUD-2_C-SP

d. MUD-2_G-KP

e. MUD-2_ V-SP-BOS GIS

f. MUD-2_ V-SP_BRYANT_2016

g. MUD-2_V-SP_CDM

2. Incorporate Specifications Amendment Document titled “AMENDMENT 0003 OF

SOLICITATION”

3. Proposal Submission Requirements are amended to allow a 140 Page Limit for Volume 1: Technical Proposal submissions.

RFI - AMENDMENT 0003

Muddy River Phase II Construction

Amendment 0003

REQUESTS FOR INFORMATION AND GOVERNMENT RESPONSES

1. Bid solicitation page 38 of 86 and Specification Section 00 80 00 (1.6)(b) includes the Monthly Anticipated Adverse Weather Work Days, however the data shown on each page is significantly different. Please clarify.

RESPONSE: Specification Section 00 80 00 Special Contract Requirements is deleted in its entirety from the project specifications titled “Muddy River Flood Damage Reduction Project (Phase 2)” dated May 2019. Section 00800 Special Contract Requirements as part of the solicitation governs.

2. Please clarify who the bid bond should be made payable to.

RESPONSE: The STANDARD FORM 24 Bid Bond should be filled in accordance with the instructions on said form. The solicitation number of this solicitation and the Bid Identification information must be filled out.

3. Please provide dimensions of the existing concrete footing for the 8 ft security fence that is being removed at the fire alarm building.

RESPONSE: Exact dimensions of the existing concrete footing for the 8’ security fence is unknown. Offeror to assume bottom of footing to be 4’ deep with 3’ wide footing and 18” thickness for footing slab and wall. See revised key note 5 on sheet C-111 under Amendment 0003.

4. The contractor is responsible for removing and resetting lighting on the security fence per Sheet XC-111. Please provide existing light locations on security fence. Please provide existing conduit locations for lighting as well.

RESPONSE: Existing light locations are located at the top of every 4th existing fence post.

Conduits for the lighting is located at the top of the fence rail. See changes to specification and revised key note 5 on sheet C-111 under Amendment 0003.

5. It appears that excavation for the flood wall and repaving of lot on C-111 will be in conflict with the existing loop detectors at the security gate. Will the loop detectors be relocated by others prior to construction? Or will the contractor be responsible for maintaining or replacing in current location?

RESPONSE: Loop detectors will not be relocated by others prior to construction. Exact location of existing loop detectors at the security gate are unknown. Offeror is responsible for maintaining and replacing the loop detectors if disturbed during construction. Refer to General Note #4 on Contract Drawing G-003. See revised key note 11 on sheet C-111 under Amendment 0003.

6. Please refer to drawing CD-15. There is an X located in an area and the description is 24-2”M.

Please confirm that the X’s on the removal drawings indicate a single tree and not the entire cluster

RESPONSE: Per drawing CD-105, each X indicates a single tree removal. If cluster of smaller trees are around tree indicated for removal, the Offeror shall remove in coordination with the proposed landscape plans for restoration.

7. Specification 32 93 00, paragraph 2.2.1- Source, states top soil may be re-used from on-site stockpiles or imported from off-site. The physical properties and contaminant levels dictate whether existing top soil is suitable for reuse. Paragraph 3.2.3.1, makes reference to the required testing of top soil, regardless of its source, stating, one test for physical properties and organic matter content every 300 cy and one soil test for contaminants shall be submitted for each 2,000 cy of topsoil installed.

The actual physical and contaminant characteristics of the existing soils are unknown. For bidding purposes, how much loam should the Contractor include as imported and how much should be included as re‐use of existing?

RESPONSE: Offeror shall assume 100% reuse of existing top soil with fertilizers. Should additional top soil be required, quality and composition shall meet specification requirements.

See changes to specifications under Amendment 0003.

8. Specification Section 32 93 00 3.3.4.3 Backfill reads: Use soil test results to determine if material excavated from plant pits is suitable for reuse as backfill. Excavated material which does not meet topsoil composition requirements for physical parameters shall be replaced with new topsoil. Excavated material which meets physical parameters but is low in carbon content may be augmented with leaf compost (1:1) mix. Because the actual physical and contaminant characteristics of the existing soils are unknown at this time, should the Contractor assume 100% re-use of the top soil with no amendments to the soil?

RESPONSE: Offeror shall assume 100% reuse of existing top soil with amendments. Should additional top soil be required, quality and composition shall meet specification requirements.

See changes to specifications under Amendment 0003.

9. Specifications 32 93 00 paragraph 2.2.9 , the turf reinforcement mat shall be 100% coir and not a mixture of coir and straw. The specification names North American Green Bionet SC150 BN as the acceptable product, however according to the manufacturer, the material is comprised of 70% Straw Fiber / 30% Coconut Fiber. Please advise.

RESPONSE: Turf Reinforcement Mat (TRM) shall be 100% coir. See changes to specifications under Amendment 0003

10. Site conditions have changed since the Contract Drawings were developed, and will continue to change until construction is implemented. How will the contractor be compensated for changes in sediment quantities and extent of invasive species removal areas from designated areas? Will a pre- and post-construction survey be performed to determine quantities?

RESPONSE: See subpart 1.2 of Specification Section 01 11 00 Summary of Work and Specification Section 01 71 23 Field Engineering for pre- and post-construction survey requirements.

11. How are police details/flagging to be paid?

RESPONSE: Arrangement for the payment of Police Details shall be made directly with the Police Department providing services.

12. During site walk on June 11, it was noted that invasive species were being removed in the vicinity of Work Areas 11 and/or 12 by others. Please clarify the scope of work being performed, the limits of invasive clearing work, and what post cutting treatment, such as herbicide application, is being performed.

RESPONSE: Phragmites removal is currently being performed by others. The work only involves cutting of the phramites and no removal of the root system or application of herbicide. The Offeror shall propose on the solicitation as shown on the plans and specifications.

13. Section 02 40 00 Paragraph 1.4 states that calculations must be provided that demonstrate:

“[T]he proposed diversion system(s) will pass displaced flow without exceeding 6 inches of river level change upstream or downstream of diversions at all times including high water and floods.”

General Note 6 on Drawing G-003 also states, “Contractor designed flow diversion system shall pass flow without exceeding six inches of river level change upstream or downstream of diversion at all times.” Please confirm that the intent of the specification is that any Contractor-designed water control system shall not cause water levels to increase more than 6 inches above what they otherwise would have been under existing conditions given the same flow rate. For instance, if the normal water surface elevation at a particular location in the channel is Elev. 1.5’ at 6 cfs, then it would be allowable to raise the water surface elevation at that location to Elev. 2.0’ with a diversion in place and flows of 6.0 cfs? Likewise, if a flow of 100 cfs results in a water surface elevation of Elev. 2.5’ at a particular location in the river under existing conditions, then it would be acceptable for the water surface elevation to be increased to Elev. 3.0’ with a diversion in place and the same flow of 100 cfs?

RESPONSE: The intent of the specification and drawing notes is that any Contractor-designed water control system shall not cause water levels to increase more than 6 inches above what they otherwise would have been under existing conditions given the same flow rate and downstream boundary condition (controlled by the Charles River). For the hypothetical flows and elevation combinations provided (Elev. 1.5’ at 6 cfs increased to Elev.

2.0’ and Elev. 2.5’ at 100 cfs to Elev. 3.0’) the interpretation of increased elevation of 0.5’ is correct.

14. Can flow be entirely blocked for short durations in isolated areas without bypass, provided that the upstream water surface does not exceed 6-inches above what it would otherwise be at the same flow prior to the removal of the blockage? Because of the backwater from the Charles Basin, it is understood that the channel will not be dewatered even if upstream flow is interrupted.

RESPONSE: Flow may be blocked in isolated areas without bypass provided that the upstream water surface does not exceed six inches above what it would be otherwise at the same flow and the same downstream boundary condition (controlled by the Charles River).

The contractor shall monitor conditions downstream of blocked areas without bypass to ensure that the Charles River is sufficiently backwatered so as not to dry out or strand wildlife.

15. Notwithstanding the 6-inch differential water level specification, is there an acceptable maximum water surface elevation that the river can be raised to and maintained at while diversions are in place? In other words, would it be acceptable to install a cofferdam that raised the river level to Elev. 3.0’ under low-flow conditions provided that under flood flows the differential water surface elevations do not exceed a 6 inch difference?

RESPONSE: There is no acceptable maximum water surface elevation established for the purpose of water control. As stated 02 40 00 Paragraph 1.4 of specification section 02 40 00, “…proposed diversion system(s) will pass displaced flow without exceeding 6 inches of river level change upstream or downstream of diversions at all times including high water and floods.”

16. Specification Section 01 11 00 Summary of Work - Section 1.2 states in part..."Excavate the river in the Backbay Fens area. Excavate five stretches of the Riverway section of the river. Perform the excavation work for Area 7 through Area 12 from downstream to upstream to the maximum extent possible." Downstream to upstream dredging is generally the reverse of common practice

- please clarify the rationale for this approach.

RESPONSE: The Offeror shall perform the excavation work for Area 7 through Area 12 from upstream to downstream unless otherwise approved by the Contracting Officer or Contracting Officer’s Representative. See changes to specifications under Amendment 0003.

17. The actual physical and contaminant characteristics of the existing soils are unknown. For bidding purposes, how much loam should the Contractor include as imported and how much should be included as re-use of existing?

RESPONSE: See response to question #11 above. See changes to specifications under Amendment 0003.

18. Please define the criteria of provisional acceptance for seeded areas and plantings.

RESPONSE: See subpart 3.4 of Specification Section 32 92 19 for seeded areas and subparts

3.6 and 3.7 of Specification Section 32 93 00 for plantings.

19. Can the USACE provide the native CAD files for the project as well as the native XYZ files for the bathymetry and topography?

RESPONSE: CADD files are being provided under Amendment 0003.

20. Specification Section 00 41 00 Bidding Schedule does not have any provisions for dredge or backfill quantities. We request that quantities be unitized and estimated quantities be provided for the following bid items in Work Areas 1 through 12:

a) Excavation by Cubic Yard - paid by pre- and post-dredge survey.

b) Backfill by Cubic Yard - paid by post-dredge survey and post-backfill survey.

c) Transportation and disposal - paid by Ton based on weight slips

RESPONSE: CADD files are being provided under Amendment 0003. Cross-sections were provided on sheets C-301 to C-333 as part of the contract drawings to the Offeror for quantity determination required for excavation and disposal and for backfill based on the means and method of work.

21. No quantities for payment are provided - what quantities of dredge/excavation and backfill is our estimate to be based on?

RESPONSE: See response to question #23 above.

22. Are the quantities identified in the CDM Smith Report dated November 2018 to be used for payment?

RESPONSE: CDM Smith Report dated November 2018 is not part of the solicitation and contract documents. The Offerors shall propose as indicated under Block 10 of the solicitation.

23. How is Unsuitable Material encountered that require dredging/excavation to be paid? Please provide a unit price and estimated quantity in the bid form to allow payment per cubic yard.

RESPONSE: It is unclear how the Offeror defines ‘Unsuitable Material.’ There is no ‘Unsuitable Material’ defined in the contract plans and specifications.

24. How is Transportation and Disposal of Unsuitable Material that is dredged/excavated to be paid?

Please provide a unit price and estimated quantity in the bid form to allow payment per ton for each disposal option being considered.

RESPONSE: See response to question #26 above.

25. How are backfill materials that are required to fill excavations of unsuitable material to be paid?

Please provide a unit price in the bid form to allow payment per cubic yard.

RESPONSE: See response to question #26 above.

26. Please confirm that once trucks leave a work area, the truck routes on public roads shown on Sheet GC106, GC107 and GC108 are suggested routes, not mandatory.

RESPONSE: Haul routes shown on sheets GC106, GC107, and GC108 were coordinated with the MA State Police and the project Sponsors and determined to be acceptable for this project. Per subpart 1.8 of Specification Section 01 11 00, the Offeror is required to submit a Hauling Plan that is coordinated with MA State Police and DCR for approval prior to the start of work.

27. With so many work areas to illustrate, can the Schedule presented in Volume I, Factor 3 be included as an attachment or appendix and excluded from the page count?

RESPONSE: Requirements of Volume I, Factor 3 remain part of the total page count. See changes to Proposal Submission Requirements of the solicitation under Amendment 0003.

28. Current dredge/excavation quantities have not been provided. Please provide quantities and electronic CAD files for all work areas to allow dredge/excavation and backfill take-offs to be performed.

RESPONSE: See response to question #23 above.

29. Please provide Split Spoon Soil Borings and Plan Locations for the 122 soil borings referenced in Section 3.0 Geotechnical and Geologic Considerations found in Appendix F (USACE Basis of Design Report) of Volume I of the CDM Smith Notice Of Project Change dated November 2018

RESPONSE: See response to question #25 above. All available sediment data is provided as part of the contract documents under “Sediment Data Appendix Phase 2 Specifications – 100%.”

30. When dredge work is done in the wet, please identify allowable dredge tolerance/overdredge depth?

RESPONSE: There is no payable dredge tolerance or overdredge provided.

31. Please provide Bench Scale Analysis of Sediment Samples referenced in Section 3.0 Geotechnical and Geologic Considerations found in Appendix F (USACE Basis of Design Report) Of Volume I of the CDM Smith Notice of Project Change dated November 2018.

RESPONSE: See response to question #25 above. All available sediment data is provided as part of the contract documents under “Sediment Data Appendix Phase 2 Specifications – 100%.”

32. Please reference the Plant Schedule shown on Drawing L-601. Can USACE provide a breakdown of this Schedule by Work Area?

RESPONSE: See revised sheet L-601 under Amendment 0003.

33. Please reference Slope and Water Edge Protection Detail shown on Drawing C-502.

a) Please confirm that the Turf Reinforcement Mat (TRM) is to be 10-ft wide, and extend out into the Muddy River riverbank/water interface (at Low Flow Elevation) by 2-ft.

b) How will Normal Low Flow Elevation of the River be determined?

c) Please confirm that TRM and TRM staples will be installed at the toe of the slope underwater?

RESPONSE:

a. Yes.

b. Normal low flow is EL. 1.5’ upstream of Avenue Louis Pasteur and EL.

1.3’ downstream of Avenue Louis Pasteur as indicated on the cross-section sheets C-301 to C-333.

c. Yes.

34. Please reference Drawing C-105 showing the location of two MDC Sewer Lines crossing the work area. Can you provide details of the invert elevations or pipe crown elevation of these lines where they intersect with the Muddy River?

RESPONSE: Information for the two MDC sewer lines are found on sheet 25 of 32 Section B and 19 of 32 South Charles Relief Sewer of the Information Drawings under “MuddyRiver2ReferenceDrawingsCompleteSet.” See also note 2 on sheet C-105.

35. Please reference Temporary Fill Volumes and Areas shown on Tables 5-1 thru 5-18 in CDM Smith Notice of Project Change dated November 2018.

a) The total volume of Temporary Fill for all areas is 311,000 CY; where is the material placed?

b) Please identify what Material Specification this material must meet.

c) Will this temporary fill have to be removed and disposed of upon completion of the work?

d) If yes, will it need to be disposed of as a Regulated Material?

RESPONSE: See response to question #25 above.

36. Takeoffs for individual plant species quantities by Work Area do not match plant quantity totals included on the Plant Schedule on Sheet L-601. Additionally, bur-reed, water willow, and blue flag iris do not appear on Landscape Plans (L-101 through L-118) at all. Please provide a breakdown of individual plant species quantities per Work Area to be used in the bid.

RESPONSE: See revised sheet L-601 under Amendment 0003.

37. Please provide area calculations per Work Area for the different seed mixes to be used.

RESPONSE: The Offeror shall determine the area of seed mixes per sheets L-101 to L-118.

38. Section 02 40 00 Control and Diversion of Water, Section 1.7.3 Pumped Diversion System, will a temporary electric generator be acceptable for use to power the electric driver pump?

RESPONSE: Yes.

39. Please confirm that all plans in the drawing set have been updated to reflect elevations that reference the North American Datum of 1988 (NAVD88) as indicated on Sheet G003, Note 2.

RESPONSE: All plans of the contract set of drawings reflect elevation of NAVD88. The datum for the Information Drawings vary.

40. Bid Solicitation, pages 43 and 44, Volume 1, Factor 2: Team Experience. “Submit a minimum of one (1) project for each of the Offeror’s team members, including the Prime Construction Contractor and the key subcontractors performing any of the four critical elements described under Factor 1.”

Followed by, “The maximum number of projects that may be submitted is five (5). If more than five (5) projects are submitted, only the first five (5) projects will be evaluated.”

Due to the complexity of this Project, the Team may require key subcontractors for multiple key elements, or a key subcontractor may wish to highlight multiple projects to demonstrate their abilities. Please confirm the maximum number of projects that may be submitted is five per team member. If this isn’t the case, please consider increasing the allowable maximum number of projects.

RESPONSE: The maximum number of projects that may be submitted for the entire team is five. The requirement of Volume I, Factor 2 Team Experience remains unchanged.

41. Specification Section 31 11 00 Section 3.1.1 Heritage Trees provides the following link:

Blockedhttps://kzla.maps.arcgis.com/apps/Shortlist/index.html?appid=0071cf3a1d0147c2b81556 3a1bb <Blockedhttps://kzla.maps.arcgis.com/apps/Shortlist/index.html?appid=0071cf3a1d0147c2b8155 63a1bb> . When browsing to link the following message appears “An error has occurred The Shortlist does not exist or is inaccessible. Please provide a new link or file.

RESPONSE: The link for the website was truncated in the specifications. The following link can be used to locate the Heritage Trees within the project limits:

https://www.arcgis.com/apps/Shortlist/index.html?appid=0071cf3a1d0147c2b815563a1bb98b7

42. Drawing Sheet L-106 south east bank calls for 101 QS. QS is not defined in the Plant schedule on sheet L-601. Please advise.

RESPONSE: See revised L-106 as part of Amendment 0003.

43. Drawing Sheet L-116, east of 1 QR shown is the text –“??”. Please identify quantity and type of plant/shrub shown.

RESPONSE: See revised L-116 as part of Amendment 0003.

44. Specification Section 32 93 00 3.2.7 calls for the salvage and stockpile of 30 habitat logs. The drawings show 52 each habitat logs. Please confirm quantity of logs.

RESPONSE: Quantity of habitat logs shall be 52. See changes to specifications under Amendment 0003.

45. Please refer to the plant schedule on L-601. We could not locate Emergents on the drawings.

Please advise.

RESPONSE: See revised L-601 as part of Amendment 0003.

46. Our take off quantities differ from the quantities shown on L-601 for Trees, Shrubs and Ferns on the plant schedule. Please clarify if the Plant schedule or the landscape plans govern.

RESPONSE: See revised L-601 as part of Amendment 0003.

47. Due to the time required to process information once answers from earlier requests for information are received, please provide a 3 week extension of the due date to allow adjustments to be made in our Technical Approach and Pricing.

RESPONSE: Amendment 0002 extended the Proposal due date to 2:00PM on 23 August 2019.

48. Drawings C-102, C-103, C-104, C-105, C-106, C-108, C-109 and C-110 Site Plans show sediment to be excavated from within 5 existing culverts under Agassiz Road and in other areas where the dredge area is shaded, but there are no cross-hatched markings or crosses to indicate excavated material disposal classification. Please clarify where the gray shaded areas with no cross-hatching/crosses are to be disposed of.

RESPONSE: The Offeror shall assume for bidding purposes that the sediment within the 5 existing culverts under Agassiz Road is the cross-hatching, out of state/non-RCRA area.

49. Please reference Landscape General Note #1 on Drawing L-100 indicating that in Restoration Areas, all trees less than 4” caliper shall be cleared and stumped. Note #2 on the same Drawing, states that existing, larger diameter trees as shown on the CD Drawings, shall be removed and stumped. Please make reference to Drawing CD-101 showing work Area 1 and note that no trees are shown to be removed in this area. Drawing GC-101 shows a 10,700 SF Staging and Dewatering Area with existing trees. Please confirm that the trees and park bench within this area can be removed. Also confirm that no Restoration Work is needed.

RESPONSE: See revised CD-101 as part of Amendment 0003.

50. Please reference Temporary Bituminous Walkway in Area 1 shown on Drawings GC-101 and C-

501. Please confirm that this walkway is to be removed upon completion of the work in Area 1.

RESPONSE: Yes, the temporary walkway is to be removed upon completion of the work in Work Area 1.

51. Please refer to Specification Section 31 11 00 Par. 3.1.1 which directs the bidders to a Website showing Heritage Trees to be protected. Please note that this Website does not show any Heritage Trees in Area 3. During the site walk, there was a discussion about tree protection for site access into Area 3, yet we find no Heritage Trees in Area 3. Please advise which trees, if any, need to be protected. After initial access to the website, the link Blockedhttps://kzla.maps.arcgis.com/apps/Shortlist/index.html?appid=0071cf3a1d0147c2b81556 3a1bb is no longer active. Please confirm the link.

RESPONSE: See response to question #47. The Offeror shall note that during the 11 June pre-bid site walk, protection of existing trees and their root system was stressed and specifically identified in Work Area 3 due to the existing trees to remain in close proximity to the work and access routes. In general, any trees not to be removed within all work areas must be protected. This is not limited to only Heritage Trees.

52. Please refer to Drawing L-502 showing Details of Tree Protection required when protection barricade cannot be used due to site constraints. Please provide detail for protection barricade that will normally be used.

RESPONSE: See revised L-502 as part of Amendment 0003.

53. In the Solicitation, Section - Proposal Submission Requirements, Content Requirement Part f, Volume II, Factor 6: Price on page 47 of 86, it states... "This volume titled “Volume II: Price Proposal” shall contain the Offeror’s Proposal Price. The Offeror’s Proposal Price shall consist of all information required to support proposed prices." Further, in part (1), it states "The Offeror shall ensure that the information submitted in this volume is consistent with and fully supports the amounts set forth in the SF1442 and bid schedule." In addition to the pricing amounts in the Bidding Schedule contained in Section 00100, please identify what, if any, additional information is to be provided by the Offeror to support pricing?

RESPONSE: As indicated, the Offeror shall provide all information required to support the proposed prices. Detailed breakdown to support the amounts set forth in the SF1442 and bid schedule shall be submitted.

54. Specification Section 00 80 00 Special Contract Requirements , Section 1.1.(3) states …"complete the entire work ready for use not later than 1,100 calendar days after the date the Contractor receives notice to proceed." Section 00800 Special Contract Requirements, Section 52.211-10 Commencement, Prosecution and Completion of Work states... " (c) complete the entire work ready for use not later than 1095 Days from Notice to proceed issuance." SF1442 Block 11 states .. complete it within 1095 calendar days after receiving notice to proceed. Please clarify period of performance from Notice to Proceed.

RESPONSE: Specification Section 00 80 00 Special Contract Requirements is deleted in its entirety from the project specifications titled “Muddy River Flood Damage Reduction Project (Phase 2)” dated May 2019. Section 00800 Special Contract Requirements as part of the solicitation governs.

55. 01 11 00 Summary of Work, Section 1.6.1 Other Construction Projects in the Area it states…" The Contractor shall note that during the prosecution period of this project, other construction projects being completed by other Contractor's will be ongoing in the vicinity. These projects include the following: 1. Rehabilitation of the Carlton Street Footbridge (MassDOT 606316); 2.

Fenway-Yawkey Multi-Use Path along the Riverside Line (MassDOT 607888); 3. Gateway East Project (MassDOT 605110). In Section 1.9.5 Work By Other Contractors, it states ..."During the performance period of this contract, no other work is anticipated to occur by other contractors."

Please clarify. Please identify the scope of the three projects listed in 1.6.1, the extent of the impact on Muddy River Phase 2 Work Areas, and the schedule for their work.

RESPONSE: The statement under subpart 1.9.5 of Specification Section 01 11 00 is to indicate there will be no other contractor working within the project’s specific limits of work. However, the Offeror shall note that there may be other projects, including but not limited to those identified under subpart 1.6.1 that may occur in the vicinity of the project during the prosecution of this contract. See changes to specifications under Amendment 0003.

56. Due to the age of the data supplied in the RFP, the Contractor will be asked by disposal landfills if the Generator considers the data to still be representative of the material to be shipped. Which data sets supplied in the RFP will the Generator consider being still representative and suitable for use during the approval process at the landfills?

RESPONSE: The contractor shall bid the project as shown and the contractor is responsible to provide all required testing information to receiving facilities for approval for proper disposal.

57. RFP Reference: Page 41 of the RFP: “The only authorized transmission method for proposals in response to this solicitation is via CD or DVD […].”

Page 45 of the RFP: “The Client shall complete Blocks 5–8 along with the two-page questionnaire and return to the Offeror in a sealed envelope.”

Question: Since offerors are required to submit only electronic (CD or DVD) files, please confirm that new PPQs solicited for this proposal may be returned to the Offeror without being in a sealed envelope. Additionally, please confirm that Clients providing PPQs may return completed questionnaires to Offerors as scanned PDFs, so as to avoid the burden of issuing return postage and mailing materials.

RESPONSE: There is no change in PPQ submission requirements provided in the solicitation at page 45, except as follows: The Offeror shall insert the sealed envelope in the package it is using to deliver its proposal on CD or DVD.

58. Due to the complexity of this project and the in-depth technical nature of this proposal, please grant a 3-week deadline extension.

RESPONSE: See response to question #51 above.

59. Please confirm that the Offeror may submit project descriptions that feature more than one task order, as long as the task orders were executed at a single site/installation.

RESPONSE: Offerors may not combine multiple task orders for consideration as a single project under Volume I, Factor 2: Team Experience.

60. RFP Reference: Page 42 of the RFP: “11x17 PDF pages are acceptable for tables/graphic representations; however, each 11x17 page counts as two pages.” Question: Please confirm that the Offeror can submit project descriptions (for Factor 2, Team Experience) on 11x17-size pages.

RESPONSE: The offeror may submit project descriptions on 11x17 size pages; however, each 11x17 page will count as two pages.

61. Detail B2 on drawing S-501 Floodwall Section and Details shows 2-inch grass pavers (extending out 4 feet from floodwall) to be placed along the building-side of the new floodwall. These grass pavers are not shown on Drawing C-222 Site Plan Fire Alarm Headquarters. Please confirm that they are to be installed along the new floodwall.

RESPONSE: Yes, the Offeror shall install 2” grass pavers per Detail B2/S101 on sheet S-501 and as indicated on General Note #8 on sheet S-501. Not all details are shown on C-111 (Offeror referenced the incorrect sheet C-222) as the sheet shows the overall site plan of work at the Fire Alarm Headquarters and Key Note #1 on sheet C-111 references Architectural and Structural sheets and specifications for more details.

62. Will USACE provide a tax exempt certification for materials incorporated into the project?

RESPONSE: Please refer to clause 52.229-3. The contractor is responsible for determining tax liability for the project. After award, the contractor may submit an applicable tax exempt form for materials for Government review and signature. However, the Government will not provide a blanket exemption form.

SECTION 00800 - SPECIAL CONTRACT REQUIREMENTS

The following have been modified:

PROPOSAL SUBMISSION REQUIREMENTS

a. The Offeror’s proposal shall consist of a CD or DVD for Volume I and a CD or DVD for Volume II as described below. Volume I shall address the Technical Factors of Technical Approach, Team Experience, Schedule, and Past Performance. It shall be titled “Volume I: Technical Proposal.” Volume II shall be titled “Volume II: Price Proposal" and shall address Small Business Participation Document, price, solicitation, offer and award documents and certifications/representations.

VOLUME TITLE

DIGITAL

COPIES

PAGE

LIMIT

FILE TYPE

Volume I: Technical Proposal 2 CD or

DVD

140 PDF and native file format

Volume II: SBPD & Price Proposal 2 CD or

DVD

N/A PDF and native file format

NOTE: All pages, including cover letters, Table of Contents pages, tables, illustrations, blank pages, dividers, and appendices will be counted in the page calculation. Pages that exceed the above noted page limitations will be removed, not read, and will not be evaluated by the Government. Agreements, letters of commitment, and past performance questionnaires will not count against the page limit.

(End of Summary of Changes)